Comparison of OO 4-6-2 Class 7MT Britannia BR models
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| Manufacturer | Tri-ang | Hornby | Hornby | Hornby |
| Year model introduced | 1960 | 1981 | 2000 | 2006 |
| DCC Capability | DCC compatible but no socket. Complete rewire required - OO | Motor fitted but no DCC socket. Ringfield motor | DCC Ready. 8-pin socket | DCC Ready. 8-pin socket |
| Detailing | ||||
| Bodyshell - factory-fitted separate details | ||||
| Handrails | No |
Yes |
Yes |
No |
| Pipe work | No | No |
Yes |
No |
| Regulator linkage | No |
Yes |
Yes |
No |
| Safety valves - turned brass |
Yes |
Yes |
Yes |
No |
| Smoke deflectors |
Yes |
No | No | No |
| Tender ladder | No | No |
Yes |
No |
| Whistle |
Yes |
Yes |
Yes |
No |
| Chassis/underframe detail | ||||
| Brake rigging chassis | No | No |
Yes |
No |
| Cab, footplate & interior detail | ||||
| Glazing | No | No |
Yes |
No |
| Tender | ||||
| Has easy-to-use coupling to loco |
Yes |
Yes |
Yes |
No |
| Wheel "aesthetics" | ||||
| Chemically-blackened |
Yes |
Yes |
Yes |
No |
| Nickel-plated | No |
Yes |
Yes |
No |
| Bufferbeam detail (pre-fitted) | ||||
| Sprung buffers | No | No |
Yes |
No |
| Bufferbeam detail (in detailing pack) | ||||
| Pipework (for rear) | No | No |
Yes |
No |
| Mechanical | ||||
| Chassis construction |
Diecast |
Diecast |
Plastic & metal |
No |
| Loco-driven wheels (number of) |
2 wheels |
None |
None |
No |
| Minimum radius |
Radius 1 |
Radius 2 |
Radius 2 |
No |
| Coupling socket/mounting | ||||
| Fixed |
Yes |
Yes |
Yes |
No |
| Coupling type |
Tension lock |
Tension lock |
Tension lock |
No |
| Weighting (to assist adhesion) | ||||
| Within tender | No |
Yes |
Yes |
No |
| Separating the body from the chassis |
Secured with one or more screws |
Secured with one or more screws |
Secured with one or more screws |
No |
| Electrical | ||||
| Motor type |
3-pole |
Ringfield |
Ringfield |
No |
| Motor location |
Locomotive |
Tender |
Tender |
No |
| Power collection |
2 rail DC |
2 rail DC |
2 rail DC |
No |
| Pickups |
2 out of 3 axles |
No | No | No |
| DCC speaker |
No provision for speaker |
No provision for speaker |
No provision for speaker |
No |
| Items in Stock | View | View | View | View |
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